Apparatus for slip-sheeting or insetting paper or like sheets



Aug. 11, 1925.

H. T. JOHNSON APPARATUS FOR SLIP SHEETING OR INSETTING PAPER OR LIKE SHEETS Filed Nov. 26, 1925 5 Sheets-Sheet 1 %P/ Jinn- Aug. 11, 1925. 1,549,553

H. T. JOHNSON APPARATUS FOR SLIP SHEETI'NG OR INSETTING PAPER OR LIKE SHEETS Filed NOV 26, 1925 5 Sheets-Sheet 2 zzwn Aug. 11, 1925. j 1,549,553

H. T. JOHNSON APPARATUS FOR SLIP SHEETI-NG OR INSETTING PAPER OR LIKE SHEETS Filed NOV. 26, 1923 5 Sheets-Sheet 5 Lvenfor:

fidiwwid Aug. 11, 1925. 1,549,553.

H. T. JOHNSON APPARATUS FOR SLIP SHEETING OR INSETTING PAPER QR LIKE SHEETS Fil'ed Nov. 26, 1925 5 Sheets-Sheet 4 J 1711, i ey.

Aug. 11, 1925.

H. T. JOHNSON APPARATUS FOR SLIP SHEETING OR INSETTING PAPER OR LIKE SHEETS Filed Nov. 26, 1923 5 Sheets-Sheet Patented Aug. 11, 1925.

UNITED STATES PATENT OFFICE.

HENRY THEOPHILUS JOHNSON, OF LONDON, ENGLAND, ASSIGNOR TO' THE CLEVELAND FOLDING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR SLIP-SHEETING OR INSETTING PAPER 03 LIKE SHEETS.

Application filed November 26, 1923.- Serial No. 677,079.

To all whom it may concern:-

Be it known that I, HENRY THEorHILtTs JoIrNsoN, a subject of the King of England, residing at London, England, have invented certain new and useful. Improvements in Apparatus for Slip-Sheeting or Insettin Paper or like Sheets of which the following is a specification.

This invention relates to a device for slipsheeting, insetting or wrapping paper or like sheets with or within sheets in an initially folded or unfolded condition or bound into pamphlets or in any otherwise consolidated form in one and the same machine to which they are fed separately for the particular purpose. For example, two single sheets containing different or complementary printed matter or a pamphlet and a cover therefor, may by this method be slipsheeted or inset and folded or wrapped together in any predetermined manner with absolute accuracy, the characteristic feature of the invention being that for the attainment of the requisite precision and sensitiveness, the moment of their concurrent feed for their ultimate association is governed by a trip or like sensitive device which is adapted to control an obstruction or stopping member in the path of the slip sheet and to be operated or' controlled by a detector located in the pathv of the main or wrapping sheet. The slip sheet or matter to be inset is held on its guide temporarily in a stationary position or its retarded in its advanceby the stopping member which preferably is integral with the tri device, and the advancing end of the main or wrapping sheet is utilized to operate the detector associated with the trip device and thereby cause said obstruction or sheet-stopping member to be removed or withdrawnautomatically at a definite adjustable moment so that the advance of the slip sheet to the insetting point in precise relation to the moment at which thewrapper or outer sheet is in the requisite position is controlled by I the direct action of thelatter on the detector.

A constructional example of the invention will hereinafter be fully described, it being of course understood that while for simplicitys sake, and to illustrate a manner in which the invention may be performed, two separate single sheets are shown dealt with and are referred to as such, sheets in any convenient number already folded or not, or pamphlets and covers and the like may, without difliculty, be treated in the same way.

According to this invention, moreover, the mechanism is'constructed in the form of a substantially self-contained unit adapted to form an attachment which may be easily applied to any existing machine for folding, insetting, wrapping and the like purposes.

Fig. 1 is a right angle front elevation of an insetting attachment applied to a folding machine in which the folds of a sheet are produced by rollers by what is known as the buckling method. V

Fig. 2 is a central vertical section there of on the line II-II of Fig. 1.

Fig. 3 is a section on an enlarged scale on the line IIIIII of Fig. 1 showing the main sheet at the moment its front edge is about to operate the device for the release of the sheet to be inset.

Fig. 4 shows in a similar view the relative position of the parts and of the sheets after said release has taken place.

Figs. 5 and 6 illustrate respectively in side elevation and plan, a manner of mounting the auxiliary feed roller for the advance of the inset sheet.

Fig. 7 is a sectional detail showing a convenient manner of supporting the trip fingers of the release device and .of enabling their initial position to be adjusted.

Fig. 8 shows a looking or preliminary release device or check for preventing the release device proper from operating prematurely under the weight of pamphlets or like heavier insetting matter.

Fig. 9 is a right angle rear elevation of the attachment for use with a horizontal buckling plate on a large folding machine to enable different sized sheets to be inset with or without edging for subsequent gumnnng. I I

Fig. 10 illustrates a section on the line X-X of Fig. 9 showing in conjunction with Fig. 11 how readily this attachment canibe applied to a folding machine of this type.

Throughout the various figures the same reference numerals will be found to designate the same or equivalent parts of the mechanism.

The mechanism illustrated in these draw ings represents .a practical form of the invention which has already been used with considerable success. It comprises a plate 1 for guiding and backing the sheet 2 to be inset, and a gravity trip or trigger 3 for holding and releasing the said sheet. Where the plate 1 is of more than ordinary dimen; sions, it is preferable to make it in two sections hinged, as shown at 4, the top member being provided with a strut 5 enabling it to be supported and held flush with the other section. Fitted to the bottom section for the'purpose of supporting the attachment at the requisite angle, are side brackets 6. The gravity trip or trigger 3 is, in the construction shown, composed of a lighttrigger bar 3 with a substantially $-shaped bottom piece 7 and a fiat transverse suspension plate or bail 8 over which the hookshaped end 9 of the part 7 of the tri ger bar 3 is snugly but detachably, fitted. on nected to this fiat bail 8 are two or more downwardly depending fingers 10. The extreme ends of these fingers 10 are rectangularly o-fi'set, as shown at 11', and adapted to protrude through holes 12 provided near the bottom edge of the plate 1 of a number corresponding to the number of the fingers 11.

The suspension bar or bail 8 is sensitively suspended from brackets 13 secured near the ting operation.

finger ends 11 should protrude from the as more particularly shown in bottom to the rear face of the late 1, and ig.'7, this 1s preferably effected by forming at the bottom edge of the bail8 knife edges 14-, which bear on V-shaped recesses 15 provided in the brackets 13. Fitted to the rear face of the trigger bar 3 is a light, readily flexible spring or detector 16, the detector being loosely connected to the trigger bar by means of a plurality of sliding clips 55, through which it can readily be moved endwise relatively to said bar, so that an adjustment of the detector is thus provided for. The plate 1 and the trigger bar 3 are, as shown in the drawings, inclined one to the other, and due to the eculiar suspension described, the trigger ar 3 with the spring member 16 will normally tend by gravity totip away from theplate 1 about the balance knife edges 14, causing the ends 11 of the fingers 10 to project through the holes 12 and to protrude beyond the outer face of the plate 1, as clearly shown in the various figures, except in Figure 4. In this protruding position these finger ends 11 constitute a temporary support or obstruction for the sheet or material 2 prior to its movement to the inset- The extent to which these plate 1 may be adjusted, for example, by the provision at the lower end of one of the fingers 10 of an eccentric disc 17 for which the shank of the finger forms the crank pin so that by rotation of the disc 17, the peripheral contact of this disc with the adjacent rear face of the plate 1 may be varied,

and the position of the bail 8 and consequently of the fingers'relatively thereto altered accordingly, at will, as will be clearly seen more particularly from Fig. 7.

In the embodiment described, the parts have been arranged with a view, to making use of gravity as an aid both to the feeding of the sheet 2 and to the operation of the trip or trigger 3. In most cases, however, it will be desirable to efiect, or at least, to assist, the feed movement of the sheet 2 to the insetting point by friction or other mechanical means. To this end, two or more friction rollers 18, preferably rubber-faced, are employed in the instance shown. These rollers are journaled with advantage on ball bearings on a common transverse shaft 19 which is not rotatable but is arranged so as to be movable by ravity radially in bosses 25 of lateral bearing brackets 20 on each side of the plate 1 as shown more clearly in Figs. 5 and 6. The brackets 20 are piv- 'oted at 21 at theside of the brackets 6 by means of screws, and are provided with inwardly ofi'set lugs 22 adapted to receive screws 23 by means of which the position of the brackets and, accordingly, the contact of the rollers 18, with the plate 1, may be adjusted to the desired degree. Interposed between the lugs 22 and the face of the plate 1 to cushion the brackets 20', are coil springs 24 surrounding the ends of the screw stems.

The ends 27 of the shaft 19 are flattened on parallel sides (as shown in Fig. 6) and are fitted in grooves 26 extending diametrically in the inner faces of the bearing bosses 25. These bearings 25 are rotatable in the brackets 20, thereby enabling the direction of the grooves 26 to be varied so that the point of contact of the rollers 18 with the lot rendered adjustable parallel with the axis of the shaft 19. The friction rollers 18 at the front of the plate 1 are each arranged to cooperate with a counter-roller 28 on the rear face of that plate by way of a slot 29 provided for this purpose in the bottom edge of the plate 1 as clearly shown more particularly in Figures 3 and 4. These counterrollers: 28 are preferably journalled in the rear brackets 13, from the recessed tops of which brackets the bail or transverse bar 8 is suspended as already. described. B means of the set screws 23 arranged for a j usting the contact of the friction rollers 18, and by means of binding screws 30 arranged in the brackets 20 for fixing the bosses 25 for the ends 27 of the shaft 19, the precise position of the counter-rollers 28 and the frictional contact of the rollers 18 may therefore be adjusted to the finest degree.

In Figure 8 it will be seen that the bail 8 which forms part of the gravity trip or trigger 3, is provided with a downward extension 31, the lower end of which is resting in a recessed toe 32 of a trip lever 33, which is hinged at 34 in small brackets 35 secured to the rear face of the plate '1 near the bottom edge thereof. This contrivance forms a lock, and at the same time a preliminary release device for the main release or gravity. trip 3. In operating on light stock, the weight of the gravity trip 3 is sufiicient to hold the finger ends 11 in the path of the paper material supported thereby. Where, however, a plurality. of sheets or pamphlets, or generally speaking, heavier stock is used, there may be some risk of the finger ends 11 being forced out of their holding or supporting position. This is prevented, however, by the engagement between the extension 31 and the recessed toe 32 of the auxiliary gravity trip 33 until, as will be understood, the latter is first swung about its hinge 34 to release that engagement, and thereby the fingers 10 and the gravity trip 3 for its normal working.

In the drawings, the invention is shown applied to a folding machine of the well known buckling type, and for the sake of clearness, only the buckling set of the machine, with which the invention is in direct co-operation, has been illustrated.

As usual, this buckling set comprises three parallel rolls 36, 37 and 38 and a buckling plate 39. The rolls 36 and 37 are the feeding-in rolls for the sheet 40 whlch latter, for the purpose of this inventlon, may be termed the outer or covering sheet.

The buckling plate 39, is as usual, composed of two parallel members 41.and 42 provided between them with adjustable stops 43. The sheet 40 to be folded between the rolls 37 and 38 is, in well known manner, fed by the rolls 36 and 37 between the two members 41, 42 of the plate 39 until its forward edge impinges on the stop 43 whereby a buckle is formed in that part of the sheet 40 which lies between the rolls 37, 38 and is then seized by these rolls to form a fold. It is at this point where, according to this invention with the arrangement shown, the second sheet 2 is to be inserted or inset in the fold to be formed in the outer or covering sheet 40; and the mechanism shown is, accordingly, so constructed as to prevent the sheet 2 from advancing to that insetting point until the precise moment for its correct inter-calation, has actually arrived.

It will be seen particularly clearly from Figs. 3, 4 and 8 that the light spring member 16 of the gravity trip 3 normally lies in the path, of the sheet 40 by extending between, and preferably beyond, the grid bars of which the members 41-, 42 of the buckling plate 39 are, as a rule, composed. Where these members consist of solid plates, a slot or slots would obviously be provided in them for the projection of the spring member or members 16 and 33.

In Fig. 8 the. auxiliary trip 33 has to perform its function before the spring member 16, and for this reason projects into the path of the sheet 40 in front of the spring of the main controlling trip 3. Due to the sensitive balance suspension of the transverse member or bail 8 of the gravity trip 3, the impact of the front edge of the sheet 40 against the spring member 16 is sufiicie-nt to swing the trip 3 over in the direction of the arrow shown in Fig. 3, causing the fingerslO to be swung in the opposite direction and to the rear of'the plate 1 as shown in Fig. 4, or in other Words, withdrawing the projecting ends 11 thereof from their holding or supporting position, whereby the sheet 2 or any other matter, supported thereon, is freed to be advanced towards the buckle formed in the outer or covering. sheet 40 between the rolls 3? and 38.

Where, as shown in Fig. 8, for the in setting of pamphlets or heavier stock, the main trip action 3 is locked by the preliminary release device 31, 32, 33, the front edge of the sheet or cover 40 is first caused to strike the trip 33 and thereby to displace this trip and to free the trip 3 for its subsequent operation, produced by the impact of the front edge of the sheet 40 against the spring 16.

By the mechanism shown and described, therefore, the feed movement of the outer or covering sheet 40, is made use of, to control the action of the feeding-in movement of the sheet or matter to be inset by timing and automatically operating the release device for that sheet or matter; and since the spring member 16 is adjustable, due to the manner in which it is connected by the clips 55 with the triggerbar 3, as previously explained, the point of its engagement with thesfront edge of the sheet 40 and accordingly the release movement for the sheet 2 can be readily predetermined unless separate trips each made to predetermine a definite point of release contact are made use of according to the size. and nature of the stock under treatment. The

friction rollers 18 are shown to be in con ment which can be readily fitted to any existing machine, the strut 5being suitably supported by the finger ends 11. Moreover,

where relativel small sheets are to be inset in the folds of sheets of large size, an auxiliary adjustment is provided as indicated in Fig. 9. This adjustment consists for ex ample of a slot and pin or, as shown, of a number of holes 47 arranged in a linear row in the plate 1 between the side lays 45 above referred to. A pin therefore when properly positioned in the slot or any one of the adjusting holes forms a subsidiary side lay .ositioning the corresponding side edge of t iesheet of which the other side edge is positioned by the adjacent side lay 45, according to the side of the plate on which the sheet is to be supported for the insetting operation prior to its release.

For the same purpose, the bail or transverse memberv8 of the release device may be divided Where itis normally constructed to operate more than two fingers 10 (four in the instance shown), and the member 3 to which the spring or detector 16 is fitted may be adjustable on the bar 8 so as to be moved to different sections thereof according to the side of the plate from which the sheet 2 to be inset is to be released, unless each section of the bail '8 is fitted with its own trigger device. v

In F ig. 9 the trigger 3 is shown (.in broken lines) fitted to the adjacent ends of the sect-ions of the divided bar 8, in which case it binds these sections into a solid bar, while in full lines it is shown fitted between the two fingers 10 of the left-hand section on the assumption that a sheet is to be fixed for insetting between the side lay 45 on that side and one of the pin holes 47 adjacent thereto, two friction rollers being necessary in this modification for each half of the plate 1.

This auxiliary adjustment may, moreover, be utilized for the purpose of predetermining the formation, in the subsequent folding, of a marginal fold or edge in the sheet to be inset which edge, if desired, may receive a subsequent gumming. To this end the inside edge of the sheet is, by the requisite choice of one of the holes 47. and the adjustment of the correspondingside lay 45, so displaced with regard to the insetting point or fold. to be made in the outer or covering sheet that in the folding of the latter so much of the outer portion of the inset sheet ashas been predetermined by the adjustment referred to is .folded over to produce the edging.-

In folding machines of the larger type the initial fold is, as a rule, produced with the aid of a; buckling plate, lying in a horizontal direction as shown in Figs. 10 and 11. In such a case use may readily be made of the adjustability of the members 41, 42 of the buckling plate for fitting an attachment according to this invention without diiliculty or expense. To that end, as will be seen from Fig. 10, the top member-41 of the buckling late 39 is simply set back relatively to t e tip of the lower member 42 to provide the requisite room for the accommodation of the bottom end of the plate 1, and a deflecting bar 48 is, in this case, preferabl attached to or made integral with the said bottom edge to ensure the correct passage of the sheet from betweenthe feed rolls 36, 37 into the mouth of the buckling plate 39 as will be readily understood. In this particular instance, moreover, the plate 1 is supported on ball joints 49 secured to brackets 50 on the rear face of the plate 1 near its bottom edge and journalled in appropriate cavities in an adjacent part of the main machine.

It will be obvious that the invention should not be deemed to be restricted to any of the specific constructions hereinbefore more particularly described and illustrated since structural modifications of the invention could, of course, be readily devised by those skilled in the art without departing from the main spirit thereof; and Where the invention may be found to be readily applicable to machines other than those specifically referred to with or without any such modification, it should be deemed to be Within the ambit of the claims made herein.

What I claim and desire to secure by Letters Patent is 1. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a stopping member for the slip sheet; a detector; means for feeding a wrapping sheet into position to actuate the detector; and a connection between the stopping-member and the detector whereby the actuation of the latter by the wrapping sheet controls the position of the former with relation to the slip sheet in a definite, predeterminable manner.

2. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a stopping member embodying a temporary obstruction in the path of the slip sheet; a detector embodying a sensitive feeler in the path of the wrapping sheet; and a trip device interposed between the stopping member and the detector whereby the removal of one of them from the path of its sheet automatically effects the withdrawal of the other.

3. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a stopping member embodying a temporary support in the path of the slip sheet; and a detector adjustable in the path of the wrapping sheet .to'enable the stopping member, during the feed movement of said wrapping sheet, to be automatically. operated at a moment predetermined by the adjustment of the detector.

4. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a guide for the slip sheet; a stopping member arranged normally to form a temporary obstruction in the path of the slip sheet; a detector arranged tobe normally held in the path of the outer sheet by gravity; and a sensitive trip member carrying the detector, the sheet-stopping member being also connected tothe trip so as to project normally from said guide, whereby the slip sheet is held stationary on its guide until the trip is tipped to its oil-normal position.

5. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a stopping member for the slip sheet; a detector for the outer sheet; a trip in co-operation with the stopping member and the detector; and an advance locking and releasing member normally locking the trip until, during the feed movement of the outer sheet, said advance member has been actuated to unlock the trip and thereby free it for actuation.

6. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprisinga guide plate for ,the slip sheet; a stopping member for the slip sheet; a detector for the outer sheet; and a trip in cooperative association with thes toppin'g member and the detector and arranged tofpivot in close relation to the guide"plate, said stopping member being providedwith an offset portion normally project-ingfthfroughthe said plate to support an edge of the slip sheet and to release the latter as theitripistipped to its oif-normal position." '1

,7, A dev'iee for automatically controlling the ns t in l rsh' ng o Wr pp g sheet material,fcomprising means for feeding a wrappingsheetfand forming fa fold therein guide 'for""'the sli'p"sheet pesi-t tioned to deliver said sheet to the fold in the wrapping sheet; a stop member vinvthe path" of 'the slip sheet; means for automatically withdrawing the stop member; and a driven feed roller also disposed in said path and in proximity to the stop member, whereby on the latter being automatically withdrawn, the slip sheet is caused to move toward the fold in the wrapping sheet with the aid of said feed roller.

' 8. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a buckling set to feed and fold a Wrapping sheet; a stop member in the path of the slip sheet; means for automatically withdrawing the stop member; and a driven feed roller also disposed in said path and in proximity to the stop member, whereby on the latter being automatically Withdrawn, the slip sheet is caused to move toward the buckling pointot' the buckling set with the aid of said feed roller.

9. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a buckling set for feeding and folding a wrapping sheet; a stop member in the path of the slip sheet; a driven feed roller also disposed in said path and in proximity to the stop member; and means engageable by the advancing wrapping sheet for automatically withdrawing the stop member, whereby the slip sheet is caused to move toward the buckling point of the buckling set with the aid of said feed roller.

10. A device for automatically controlling. the insetting, slip-sheeting or wrapping of sheet material, comprising a buckling set for feeding and folding a wrapping sheet; a stop member for temporarily holding a slip sheet above the buckling point of the buckling set; and means engageable by the advancing wrapping sheet for automatically withdrawing the stop member, thereby to enable the movement of the slip sheet toward said buckling point.

11. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a buckling set for feeding and folding 1a wrapping sheet; a stop member for tempora'rily holding a p l et ov e uck n Point. of t uck n ea. a d te t e gag e at advancing wrapping sheet; and. connectlons between the detector :andjg'thestop member operated automatically by such engagement offsaid vdetector, to, withdraw the stopvmember and thereby enablegthe movement of the slip sheet toward said buckling p'olnt,

12,111; a d 'evice for automatically controlling the insetting slip-sheeting or wrapping of sheet material, the combinatlon of a guide plate ,f ornth esheetitobe inset having a pair joffobliqueslotsf adjacent its opposite side edges; a main stop means on said plate extending across the same and adapted to engage the front edge'of the sheet; and side lays adjustable in said slots to engage one side edge or the other of the sheet.

13. In a device for automatically controlling the insetting, slip-sheeting or wrapping of sheet material, the combination of a guide plate for the sheet to be. inset; a main stop means engageable with the front edge of the sheet and extending across the plate; side lays adjacent the opposite side adapted to engage ling the insetting,

edges of said plate and adjustable accordin to the side edges of the sheet; and a sufisidiary side lay located between the firstnamed side lays and constituting an additional adjustment for the side edges of small sheets, such additional adjustment also enabling an edge or margin for subsequent gummdng or the like to be predetermined.

14. In a device for ling the insetting. slip-sheeting or Wrapping of sheet material, the combination of a guide plate for the sheet to be inset; a main stop means engageable with the front edge of the sheet and extending across the plate; and side lays adjacent the opposite side edges of said plate and adjustable according to the side edges of the sheet; said plate being formed with a. row of holes located between the side lays to selectively receive a pin, whereby an additional adjustment is provided for the side edges of small sheets and also for enabling an edge or margin for subsequent gumming or the'like to be predetermined.

15. In a device for automatically controlling the insetting, slip-sheeting ,or Wrapping of sheet material, the combination of a guide plate for the sheet to be inset having a pair of oblique slots adjacent its opposite side edges; a main stop means on said plate extending across the same and the front edge of the sheet; and side lays adjustable in said slots to engage one side edge or the other of the sheet; said plate being formed with a row of holes located between the inner edges of said slots to selectively receive a pin, where: by an additional adjustment is provided for the side edges of small sheets and also for enabling an edge or margin for en uent gumming or the like to be predetermined.

16. A device for automatlcally controlling the insetting, slip-sheeting or wrapping of sheet material, comprising a guide for the sli sheet; sheet-stopping means embodying ngers normally pro'ecting. from the sheet guide and adjustable relatively thereto; an eccentric means carried by said fingers for predetermining at will the extent:1 to which said fingers project from said gm e. a

17. In a device for automatically controlslip-sheeting or wrap ing the combination of as eet feed rollers; a shaft therefor; drivof sheet materia guide automatically controling means for said rollers; bearings wherein said shaft is mounted for adjustment with respect to said driving means and the sheet guide; and brackets from which said feed rollers are suspended, said brackets being adjustable angularly with respect to said sheet guide to enable the contact of the rollers with the sheet guide to be mined to any desired degree.

18. A device for automatically controlling the insetting,slip-sheeting or wrapping of sheet material, comprising a sheet guide having openings therein; sheet-stopping fingers normally projecting through said openings into the path of the slip sheet; a detector for the outer sheet embodyin a highly-sensitive, adjustable spring mem er; and a pivotal carrier therefor provided with a bail which is suspended on a knife-edge located adjacent to the sheet guide.

19. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet-like material, comprising a guide for the slip sheet; sheet-stopping means embodying fingers normally projecting from the sheet thereto; and means for predetermining at will the extent to which said fingers project from said guide.

20. A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet-like material, comprising a stopping member for the slip sheet; a detector for the covering sheet; a carrier for both predeterthe stopping member and the detector; and

a bail on which said carrier is movable and adjustable according to the slip sheet to be supported thereby. I

21; A device for automatically controlling the insetting, slip-sheeting or wrapping of sheet-like material, comprising, in combination, a sheet guide, a stopping member for the slip sheet, a tri action associated with said stopping mem er, a detector for the covering sheet, feed rollers for advancing the slip sheet to the insetting point, and adjustin means for the said feed rollers; all of the oregoing elements being arranged and assembled to form a self-contained unit, attachable to and detachable from the machine on which it is to be used.

In testimony whereof Iv affix my signature.

HENRY 'THEOPHILUS JOHNSON.

guide and adjustable relatively 

